docs: def addUser(self, username, password,
                  firstname, lastname,
                  email, role):
          """adds a user to the invitation list"""
          self._invites.append({
              "username":username,
              "password":password,
              "firstname":firstname,
              "lastname":lastname,
              "fullname":"%s %s" % (firstname, lastname),
              "email":email,
              "role":role
          })